Bicycle top tube



FIG. 1 is a perspective view of the bicycle top tube of the presentinvention showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front end view thereof;

FIG. 4 is a side elevational view thereof;

FIG. 5 is a rear end view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines showing the bicycle are provided for the purpose ofillustrating environmental structure and forms no part of the claimeddesign. Furthermore, the broken lines showing portions of the bicycletop tube illustrate portions of the article that forms no part of theclaimed design.

CLAIM The ornamental design for a bicycle top tube, as shown anddescribed.